For disks without a plan9 partition, diskparts generates
noise at boot time ("no plan9 partition table found").
This patch mutes it by sending that noise to /dev/null.

Reference: /n/sources/patch/applied/diskparts-mute
Date: Wed Jun 18 18:38:20 CES 2008
Signed-off-by: a.h.vandijk@gmail.com

--- /rc/bin/diskparts	Wed Jun 18 18:36:07 2008
+++ /rc/bin/diskparts	Wed Jun 18 18:36:03 2008
@@ -19,7 +19,7 @@
 		parts=($disk/data)
 	for(part in $parts)
 		if(test -f $part)
-			disk/prep -p $part |
+			disk/prep -p $part >[2]/dev/null |
 				grep -v '^delpart ' >$disk/ctl >[2]/dev/null
 }